How to judge the rationality of refrigerant quantity

Abstract

The invention relates to the technical field of refrigeration system maintenance. Aiming at the problem that whether the amount of refrigerant is suitable or not can not be conveniently judged when replenishing refrigerant, a method for judging the rationality of refrigerant amount is proposed, which includes: when charging refrigerant, obtain real-time Under the charging operation condition of the refrigerant refrigeration system, the winding temperature of the compressor motor and the discharge temperature of the compressor are recorded. The temperature difference between the winding temperature and the discharge temperature is the actual temperature difference; The corresponding relationship between the temperature difference between the winding temperature and the discharge temperature of the refrigeration system with the target amount of refrigerant under the preset operating conditions, and the estimated winding temperature and discharge temperature of the refrigeration system with the target amount of refrigerant under the charging operation condition Record the temperature difference as the expected temperature difference; judge whether the actual temperature difference matches the expected temperature difference, and if so, the amount of refrigerant basically reaches the target amount. The invention is suitable for monitoring whether the amount of refrigerant in the refrigeration system is appropriate.

Description

technical field [0001] The invention relates to the technical field of refrigeration system maintenance, in particular to a method for judging the rationality of the amount of refrigerant. Background technique [0002] The refrigeration system consists of compressors, condensers, throttling devices and evaporators, which are connected and sealed by metal tubes, and filled with refrigerant inside. The compressors are usually fully enclosed, and the compressor completes the process from suction to exhaust. The process is realized by the operation of the motor. The amount of refrigerant should be appropriate, neither too much nor too little. The reduction of refrigerant will lead to the decline of system performance and the reduction of energy efficiency ratio; if it is reduced more, it may cause damage to the compressor motor, which may eventually cause the motor to burn out, or cause a short circuit between the turns of the motor and the electrification of the compressor she...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: to overcome the problem that the prior art cannot conveniently judge whether the refrigerant amount is appropriate when supplementing the refrigerant, and propose a method for judging the rationality of the refrigerant amount

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